High-insulation shielding cable

Abstract

The utility model relates to a high-insulation shielding cable which comprises a conductor, an insulating layer wrapping the conductor, a shielding layer wrapping the insulating layer and a protective sleeve wrapping the shielding layer. A damping structure is arranged in the protective sleeve and comprises positioning blocks and positioning plates, the positioning blocks are fixed to the outer side wall of the shielding layer at intervals, and the positioning plates are annularly arranged outside the positioning blocks and matched with the positioning blocks for positioning. According to the invention, the damping structure is arranged between the shielding layer and the protective sleeve, and through the cooperation of the positioning plate and the positioning block, on one hand, the structure is enhanced, and on the other hand, the damping performance is improved, so that the shock resistance of the high-insulation shielding cable is improved, and the signal transmission process is more stable.

Description

Technical Field

[0001] This application relates to the technical field of cables, and in particular, to a highly insulated shielded cable. Background Art

[0002] Cables are widely used in various fields. Therefore, the requirements for the heat resistance, cold resistance, tensile strength, shielding and other properties of cables are getting higher and higher. In the fields of power transmission and data communication, in order to ensure high-quality data transmission and prevent data distortion, insulated shielded cables are widely used.

[0003] The existing Chinese patent with the publication number CN205789267U discloses a highly insulated shielded cable, which includes a cable conductor, an antioxidant layer, an inner shield layer, an insulating layer, an outer shield layer, a waterproof layer, an anti-corrosion layer and a protective layer.

[0004] Regarding the above related technologies, the applicant believes that the current highly insulated shielded cable has insufficient seismic resistance and may be unstable during signal transmission, and there is still room for improvement. Utility Model Content

[0005] In order to improve the seismic performance of the cable and make the signal transmission process more stable, this application provides a highly insulated shielded cable.

[0006] The highly insulated shielded cable provided by this application adopts the following technical solutions:

[0007] A highly insulated shielded cable includes a conductor, an insulating layer wrapped around the outside of the conductor, a shielding layer wrapped around the outside of the insulating layer, and a protective sleeve wrapped around the outside of the shielding layer; a shock-absorbing structure is provided in the protective sleeve, and the shock-absorbing structure includes positioning blocks and a positioning plate. The positioning blocks are fixedly spaced on the outer side wall of the shielding layer, the positioning plate is annularly arranged outside the positioning blocks, and the positioning plate is annularly arranged outside the positioning blocks and cooperates with the positioning blocks for positioning.

[0008] By adopting the above technical solutions, a shock-absorbing structure is arranged between the shielding layer and the protective sleeve. Through the cooperation of the positioning plate and the positioning blocks, on the one hand, it plays a role in enhancing the structure, and on the other hand, it plays a role in improving the buffering performance, so that the seismic resistance of the highly insulated shielded cable is improved, and thus the signal transmission process is more stable.

[0009] Preferably, the shock-absorbing structure further includes a buffer belt and a connection end arranged between the conductors. A plurality of the buffer belts are arranged between adjacent conductors, and arc-shaped parts that cooperate with the corresponding conductors are respectively formed on both side walls of the buffer belt; the adjacent ends of the buffer belts on adjacent conductors are connected to each other, the connection end extends from the mutually remote ends of the buffer belts and is located between adjacent conductors, and the end of the connection end is fixed to the inner wall of the insulating layer.

[0010] By adopting the above technical solutions, the buffer band and the connection end achieve seismic stability between adjacent conductors, while avoiding interference between the conductors.

[0011] Preferably, the cross-section of the end of the connection end fixed to the inner wall of the insulating layer is triangular.

[0012] By adopting the above technical solutions, the support stability for the conductor is improved through the triangular shape, and the contact area of the connection end connected to the insulating layer is increased, enhancing the structural strength.

[0013] Preferably, the positioning block includes a trapezoidal block and a dovetail block. The trapezoidal block and the dovetail block are alternately arranged on the outer side wall of the shielding layer. The lower bottom of the trapezoidal block is fixed to the outer side wall of the shielding layer, the lower bottom of the dovetail block is fixed to the side wall of the positioning plate, and the trapezoidal block and the dovetail block are inserted and matched in the reverse direction.

[0014] By adopting the above technical solutions, the lower bottoms of the symmetrical trapezoidal block and dovetail block are respectively fixed to the shielding layer and the positioning plate, forming a reverse matching structure, making the structure more stable and the seismic resistance stronger.

[0015] Preferably, a fixing block is fixed on the protective sleeve, and a fixing groove for inserting the fixing block is formed on the positioning plate.

[0016] By adopting the above technical solutions, the connection stability between the protective sleeve and the positioning plate is improved by the tight fit of the fixing block and the fixing groove, so as to enhance the structural stability of the cable and improve the seismic performance.

[0017] Preferably, the side wall of the fixing block is in a concave arc shape that approaches each other.

[0018] By adopting the above technical solutions, the side wall of the fixing block is in a concave arc shape, that is, the fixing block deforms and enters the fixing groove, and the two are more tightly matched, which is beneficial to improving the connection stability between the protective sleeve and the positioning plate, so as to enhance the structural stability of the cable and improve the seismic performance.

[0019] In summary, the present application includes at least one of the following beneficial technical effects:

[0020] A shock-absorbing structure is arranged between the shielding layer and the protective sleeve. Through the cooperation of the positioning plate and the positioning block, on the one hand, it plays a role in enhancing the structure, and on the other hand, it plays a role in improving the buffering performance, improving the seismic resistance of the high-insulation shielding cable, so that the signal transmission process is more stable;

[0021] The lower bottoms of the symmetrical trapezoidal block and dovetail block are respectively fixed to the shielding layer and the positioning plate, forming a reverse matching structure, making the structure more stable and the seismic resistance stronger;

[0022] The buffer strip and the connection end achieve seismic stability between adjacent conductors while avoiding interference between the conductors; the cross-section of the end of the connection end is triangular, which improves the support stability for the conductors and increases the contact area of the connection end connected to the shielding layer, enhancing the structural strength.

[0023] The fixing block on the protective sleeve is installed in the fixing groove of the positioning plate. The side wall of the fixing block is in a recessed arc shape, that is, the fixing block enters the fixing groove through deformation, and the two fit more closely, which is beneficial to improving the connection stability between the protective sleeve and the positioning plate, so as to enhance the structural stability of the cable and improve the seismic performance. Brief Description of the Drawings

[0024] Figure 1 is a cross-sectional schematic diagram of the cable according to an embodiment of the present application;

[0025] Figure 2 is Figure 1 an enlarged schematic diagram of part A in

[0026] Description of the reference numerals: 1, conductor; 2, insulating layer; 3, shielding layer; 4, protective sleeve; 41, fixing block; 5, shock-absorbing structure; 51, buffer strip; 52, connection end; 53, positioning block; 531, trapezoidal block; 532, dovetail block; 54, positioning plate; 541, fixing groove. Detailed Description of the Embodiment

[0027] The following further describes the present application in detail with reference to the drawings.

[0028] An embodiment of the present application discloses a highly insulated shielded cable. Referring to Figure 1 , it includes a conductor 1, an insulating layer 2 wrapped around the outside of the conductor 1, a shielding layer 3 wrapped around the outside of the insulating layer 2, and a protective sleeve 4 wrapped around the outside of the shielding layer 3.

[0029] Referring to Figure 1 , 2 , a shock-absorbing structure 5 is provided in the protective sleeve 4. The shock-absorbing structure 5 includes a buffer strip 51 and a connection end 52 disposed between the conductors 1 and the conductors 1. A plurality of buffer strips 51 are spaced apart between adjacent conductors 1, and arc shapes matching the corresponding conductors 1 are formed on both side walls of the buffer strip 51; the ends of the buffer strips 51 on adjacent conductors 1 that are close to each other are connected to each other. The connection end 52 extends from the ends of the buffer strips 51 that are away from each other and is located between adjacent conductors 1, and the end of the connection end 52 is fixed to the inner wall of the shielding layer 3. Thus, the seismic stability between adjacent conductors 1 is improved through the buffer strip 51 and the connection end 52, and at the same time, interference between the conductors 1 can be avoided.

[0030] Referring to Figure 1 , 2, the cross-section of the end of the connection end 52 fixed to the inner wall of the insulating layer 2 is triangular; the triangular shape improves the support stability for the conductor 1 and increases the contact area where the connection end 52 is connected to the shielding layer 3, enhancing the structural strength.

[0031] Referring to Figure 1 、 2 , the shock-absorbing structure 5 further includes a positioning block 53 and a positioning plate 54. The positioning block 53 is fixedly spaced on the outer sidewall of the shielding layer 3, and the positioning plate 54 is annularly arranged outside the positioning block 53.

[0032] Referring to Figure 1 , fixing blocks 41 are circumferentially and fixedly spaced on the protective sleeve 4, and fixing grooves 541 for inserting the fixing blocks 41 are formed on the outer sidewall of the positioning plate 54; the sidewalls of the fixing blocks 41 are in a recessed arc shape that approaches each other, that is, the fixing blocks 41 enter the fixing grooves 541 through deformation, and the cooperation between the two is tighter, which is beneficial to improving the connection stability between the protective sleeve 4 and the positioning plate 54, thereby enhancing the structural stability of the cable and its seismic resistance.

[0033] Referring to Figure 1 、 2 , the positioning block 53 includes a trapezoidal block 531 and a dovetail block 532. The trapezoidal block 531 and the dovetail block 532 are alternately arranged on the outer sidewall of the shielding layer 3. The lower base of the trapezoidal block 531 is fixed to the outer sidewall of the shielding layer 3, and the lower base of the dovetail block 532 is fixed to the inner sidewall of the positioning plate 54, and the trapezoidal block 531 and the dovetail block 532 are reversely inserted and matched; the symmetric trapezoidal block 531 and dovetail block 532 form a reverse matching structure, making the structural stability higher and the seismic resistance stronger.

[0034] The above are all the preferred embodiments of this application. The protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A high-insulation shielded cable, characterized in that: The invention comprises a conductor (1), an insulating layer (2) wrapped around the outside of the conductor (1), a shielding layer (3) wrapped around the outside of the insulating layer (2), and a protective sleeve (4) wrapped around the outside of the shielding layer (3); a shock absorbing structure (5) is arranged inside the protective sleeve (4); the shock absorbing structure (5) comprises a positioning block (53) and a positioning plate (54); the positioning block (53) is fixed at intervals on the outer wall of the shielding layer (3); the positioning plate (54) is annularly arranged outside the positioning block (53) and cooperates with the positioning block (53) for positioning.

2. A high-insulation shielded cable according to claim 1, characterized in that: The shock absorbing structure (5) further comprises a buffer belt (51) and a connection end (52) arranged between the conductors (1). A plurality of the buffer belts (51) are arranged between adjacent conductors (1), and the two side walls of the buffer belts (51) respectively form arcs that match the corresponding conductors (1); the adjacent ends of the buffer belts (51) on adjacent conductors (1) are connected to each other, and the connection end (52) is extended to form the ends of each buffer belt (51) that are away from each other and is located between adjacent conductors (1), and the end of the connection end (52) is fixed to the inner wall of the insulating layer (2).

3. A high-insulation shielded cable according to claim 2, characterized in that: The cross section of the end portion of the connection end (52) fixed to the inner wall of the insulating layer (2) is triangular.

4. A high-insulation shielded cable according to claim 1, characterized in that: The positioning block (53) comprises a trapezoidal block (531) and a dovetail block (532), wherein the trapezoidal block (531) and the dovetail block (532) are alternately arranged on the outer wall of the shielding layer (3), the lower base of the trapezoidal block (531) is fixed to the outer wall of the shielding layer (3), the lower base of the dovetail block (532) is fixed to the inner wall of the positioning plate (54), and the trapezoidal block (531) and the dovetail block (532) are plugged in opposite directions.

5. A high-insulation shielded cable according to claim 1, characterized in that: A fixing block (41) is fixed on the protective cover (4), and a fixing groove (541) for the fixing block (41) to be plugged into is provided on the positioning plate (54).

6. A high-insulation shielded cable according to claim 5, characterized in that: The side walls of the fixing block (41) are in the shape of inwardly recessed arcs that are close to each other.

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